20021220119 has 2 divisors, whose sum is σ = 20021220120. Its totient is φ = 20021220118.

The previous prime is 20021220101. The next prime is 20021220133. The reversal of 20021220119 is 91102212002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20021220119 - 2⁸ = 20021219863 is a prime.

It is a super-2 number, since 2×20021220119² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20021220119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021220139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010610059 + 10010610060.

It is an arithmetic number, because the mean of its divisors is an integer number (10010610060).

Almost surely, 2^20021220119 is an apocalyptic number.

20021220119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021220119 is an equidigital number, since it uses as much as digits as its factorization.

20021220119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 20021220119 in words is "twenty billion, twenty-one million, two hundred twenty thousand, one hundred nineteen".